Cracks on chips surfaces and in between contacts and pads. Is it acceptable.

[ENeoh.1]

Per my QC observations, seeing multiple pieces across multiple lots with cracks on the bottom surface in between contacts and pads, as well as several samples with very rough marks on the contacts. Using the high powered scope, cracks were confirmed, as well as odd, textured metal contacts.

Please advise if this is due to design & material selection related.

[Uwe Bonnes]

Post a close-up picture.

[S.Ma]

Take picture, from scope to illistrate more, including the top marking view and contact your nearest ST sales office to reach QA people.

[ENeoh.1]

Refer to attached close up phot to show the body chip has multiple cracks.

please help to advise is this acceptable and does not affect the form fit function